20. Trouble-Shooting
106
Dr. A. Kuntze
I
Gutes Wasser mit System
Robert-Bosch-Str. 7a
40668 Meerbusch
+49 (0) 2150-7066-0 / Fax -60
www.kuntze.com
If the measured value exceeds the limits, this might mean that the feeding of control chemicals has
been interrupted, because a reagent is empty, or the controller was stopped, or a feed line is damaged.
Warning
If this message was caused by a defective feed line, hazardous chemicals
might leak from the break!
Note
In that case a second message „dosage check“ is probably displayed, if you
have activated this function and your controller settings do not impede the
function.
If the message occurs shortly after start-up and possibly quite frequently, please check the settings for
control and limits to make sure that they match both each other and the requirements and conditions
of your equipment. Perhaps the controller has to be set to slower reactions by choosing a larger
proportional range to prevent overdosing.
Note
Temporary limit exceedance that might happen regularly during normal
operation can be ignored by setting a delay time in the menu Alarm relay.
Event message
Cause
Suggested remedies
Digital input 1
Low water
Level
Ext. controller stop
The digital input was closed by a
connected sensor or switch
Digital input 1 / low water:
check water flow,
check sensor/connection
Digital input 1 / level:
check container level,
check sensor/connection
The digital input allows connection of a flow sensor or level sensor or an external switch. According to
its intended function, you can assign the digital input one of three different texts: „Low water“ if you
have connected a flow or water level sensor, „level“, if you use a level sensor to control the level of a
chemical, or „ext. controller stop“, if you use an external switch to activate and deactivate the controller.
Note
Independent of what text you have selected, the controller is automatically
shut down whenever the digital input switches.
Depending on these settings, the suggested remedies differ: If you have selected „low water“ or „level“,
the instrument suggests checking the availability of water or reagent, and if that is ok, the proper
function of the flow or level sensor.
Note
If you have activated a second digital input, this will lead to similar messages,
starting with „digital input 2“.
